Re: Enumerate output channels/pins for a selected audio device.

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On Thu, 11 May 2006 09:31:02 -0700, Mike Fraser wrote:

Hi,

I am trying to figure out a method to query or enumerate the output
channels/pins for a certain audio device. Basicly I want to know if an audio
card has support for front, rear, center outputs etc. With this information I
can setup a WAVEFORMATEXTENSIBLE structure to play an audio stream on the
selected outputs. After doing some research on this in different news groups
I ended with not much information. Some suggested to use DirectShow, I have
no experience in this field so I wouldn't even know where to start. An other
option would be to query the WDM driver directly for supported pins, same
applies here, no experience with this and no information could be found. I
hope that there is someone out here who could shed some light on this matter,
this would be very much appriciated! Thanks, Mike.

I haven't found a reliable way to do this unfortunately other than to read
the current system speaker configuration as is specified in the control
panel. The problem is that the outputs on a sound card do not have pins,
hence no way to enumerate.

--
http://www.chrisnet.net/code.htm
http://www.avdevforum.com/AV
.

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